[deliverable/linux.git] / drivers / memstick / host / tifm_ms.c

/*
 *  TI FlashMedia driver
 *
 *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
 * that made this driver possible.
 *
 */

#include <linux/tifm.h>
#include <linux/memstick.h>
#include <linux/highmem.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <asm/io.h>

#define DRIVER_NAME "tifm_ms"

static bool no_dma;
module_param(no_dma, bool, 0644);

/*
 * Some control bits of TIFM appear to conform to Sony's reference design,
 * so I'm just assuming they all are.
 */

#define TIFM_MS_STAT_DRQ     0x04000
#define TIFM_MS_STAT_MSINT   0x02000
#define TIFM_MS_STAT_RDY     0x01000
#define TIFM_MS_STAT_CRC     0x00200
#define TIFM_MS_STAT_TOE     0x00100
#define TIFM_MS_STAT_EMP     0x00020
#define TIFM_MS_STAT_FUL     0x00010
#define TIFM_MS_STAT_CED     0x00008
#define TIFM_MS_STAT_ERR     0x00004
#define TIFM_MS_STAT_BRQ     0x00002
#define TIFM_MS_STAT_CNK     0x00001

#define TIFM_MS_SYS_DMA      0x10000
#define TIFM_MS_SYS_RESET    0x08000
#define TIFM_MS_SYS_SRAC     0x04000
#define TIFM_MS_SYS_INTEN    0x02000
#define TIFM_MS_SYS_NOCRC    0x01000
#define TIFM_MS_SYS_INTCLR   0x00800
#define TIFM_MS_SYS_MSIEN    0x00400
#define TIFM_MS_SYS_FCLR     0x00200
#define TIFM_MS_SYS_FDIR     0x00100
#define TIFM_MS_SYS_DAM      0x00080
#define TIFM_MS_SYS_DRM      0x00040
#define TIFM_MS_SYS_DRQSL    0x00020
#define TIFM_MS_SYS_REI      0x00010
#define TIFM_MS_SYS_REO      0x00008
#define TIFM_MS_SYS_BSY_MASK 0x00007

#define TIFM_MS_SYS_FIFO     (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
			      | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)

/* Hardware flags */
enum {
	CMD_READY  = 0x01,
	FIFO_READY = 0x02,
	CARD_INT   = 0x04
};

struct tifm_ms {
	struct tifm_dev         *dev;
	struct timer_list       timer;
	struct memstick_request *req;
	struct tasklet_struct   notify;
	unsigned int            mode_mask;
	unsigned int            block_pos;
	unsigned long           timeout_jiffies;
	unsigned char           eject:1,
				use_dma:1;
	unsigned char           cmd_flags;
	unsigned char           io_pos;
	unsigned int            io_word;
};

static unsigned int tifm_ms_read_data(struct tifm_ms *host,
				      unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	while (host->io_pos && length) {
		buf[off++] = host->io_word & 0xff;
		host->io_word >>= 8;
		length--;
		host->io_pos--;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		*(unsigned int *)(buf + off) = __raw_readl(sock->addr
							   + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	if (length
	    && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		host->io_word = readl(sock->addr + SOCK_MS_DATA);
		for (host->io_pos = 4; host->io_pos; --host->io_pos) {
			buf[off++] = host->io_word & 0xff;
			host->io_word >>= 8;
			length--;
			if (!length)
				break;
		}
	}

	return off;
}

static unsigned int tifm_ms_write_data(struct tifm_ms *host,
				       unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	if (host->io_pos) {
		while (host->io_pos < 4 && length) {
			host->io_word |=  buf[off++] << (host->io_pos * 8);
			host->io_pos++;
			length--;
		}
	}

	if (host->io_pos == 4
	    && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(host->io_word, sock->addr + SOCK_MS_DATA);
		host->io_pos = 0;
		host->io_word = 0;
	} else if (host->io_pos) {
		return off;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		__raw_writel(*(unsigned int *)(buf + off),
			     sock->addr + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	switch (length) {
	case 3:
		host->io_word |= buf[off + 2] << 16;
		host->io_pos++;
	case 2:
		host->io_word |= buf[off + 1] << 8;
		host->io_pos++;
	case 1:
		host->io_word |= buf[off];
		host->io_pos++;
	}

	off += host->io_pos;

	return off;
}

static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned int length;
	unsigned int off;
	unsigned int t_size, p_cnt;
	unsigned char *buf;
	struct page *pg;
	unsigned long flags = 0;

	if (host->req->long_data) {
		length = host->req->sg.length - host->block_pos;
		off = host->req->sg.offset + host->block_pos;
	} else {
		length = host->req->data_len - host->block_pos;
		off = 0;
	}
	dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
		host->block_pos);

	while (length) {
		unsigned int uninitialized_var(p_off);

		if (host->req->long_data) {
			pg = nth_page(sg_page(&host->req->sg),
				      off >> PAGE_SHIFT);
			p_off = offset_in_page(off);
			p_cnt = PAGE_SIZE - p_off;
			p_cnt = min(p_cnt, length);

			local_irq_save(flags);
			buf = kmap_atomic(pg) + p_off;
		} else {
			buf = host->req->data + host->block_pos;
			p_cnt = host->req->data_len - host->block_pos;
		}

		t_size = host->req->data_dir == WRITE
			 ? tifm_ms_write_data(host, buf, p_cnt)
			 : tifm_ms_read_data(host, buf, p_cnt);

		if (host->req->long_data) {
			kunmap_atomic(buf - p_off);
			local_irq_restore(flags);
		}

		if (!t_size)
			break;
		host->block_pos += t_size;
		length -= t_size;
		off += t_size;
	}

	dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
	if (!length && (host->req->data_dir == WRITE)) {
		if (host->io_pos) {
			writel(TIFM_MS_SYS_FDIR
			       | readl(sock->addr + SOCK_MS_SYSTEM),
			       sock->addr + SOCK_MS_SYSTEM);
			writel(host->io_word, sock->addr + SOCK_MS_DATA);
		}
		writel(TIFM_MS_SYS_FDIR
		       | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(0, sock->addr + SOCK_MS_DATA);
	} else {
		readl(sock->addr + SOCK_MS_DATA);
	}

	return length;
}

static int tifm_ms_issue_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned char *data;
	unsigned int data_len, cmd, sys_param;

	host->cmd_flags = 0;
	host->block_pos = 0;
	host->io_pos = 0;
	host->io_word = 0;
	host->cmd_flags = 0;

	data = host->req->data;

	host->use_dma = !no_dma;

	if (host->req->long_data) {
		data_len = host->req->sg.length;
		if (!is_power_of_2(data_len))
			host->use_dma = 0;
	} else {
		data_len = host->req->data_len;
		host->use_dma = 0;
	}

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_FIFO_ENABLE,
	       sock->addr + SOCK_FIFO_CONTROL);

	if (host->use_dma) {
		if (1 != tifm_map_sg(sock, &host->req->sg, 1,
				     host->req->data_dir == READ
				     ? PCI_DMA_FROMDEVICE
				     : PCI_DMA_TODEVICE)) {
			host->req->error = -ENOMEM;
			return host->req->error;
		}
		data_len = sg_dma_len(&host->req->sg);

		writel(ilog2(data_len) - 2,
		       sock->addr + SOCK_FIFO_PAGE_SIZE);
		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
		sys_param = TIFM_DMA_EN | (1 << 8);
		if (host->req->data_dir == WRITE)
			sys_param |= TIFM_DMA_TX;

		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);

		writel(sg_dma_address(&host->req->sg),
		       sock->addr + SOCK_DMA_ADDRESS);
		writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
	} else {
		writel(host->mode_mask | TIFM_MS_SYS_FIFO,
		       sock->addr + SOCK_MS_SYSTEM);

		writel(TIFM_FIFO_MORE,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
	}

	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
	writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);
	host->req->error = 0;

	sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
	sys_param |= TIFM_MS_SYS_INTCLR;

	if (host->use_dma)
		sys_param |= TIFM_MS_SYS_DMA;
	else
		sys_param &= ~TIFM_MS_SYS_DMA;

	writel(sys_param, sock->addr + SOCK_MS_SYSTEM);

	cmd = (host->req->tpc & 0xf) << 12;
	cmd |= data_len;
	writel(cmd, sock->addr + SOCK_MS_COMMAND);

	dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
	return 0;
}

static void tifm_ms_complete_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	struct memstick_host *msh = tifm_get_drvdata(sock);
	int rc;

	del_timer(&host->timer);

	host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
	host->req->int_reg = (host->req->int_reg & 1)
			     | ((host->req->int_reg << 4) & 0xe0);

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);

	if (host->use_dma) {
		tifm_unmap_sg(sock, &host->req->sg, 1,
			      host->req->data_dir == READ
			      ? PCI_DMA_FROMDEVICE
			      : PCI_DMA_TODEVICE);
	}

	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);

	dev_dbg(&sock->dev, "TPC complete\n");
	do {
		rc = memstick_next_req(msh, &host->req);
	} while (!rc && tifm_ms_issue_cmd(host));
}

static int tifm_ms_check_status(struct tifm_ms *host)
{
	if (!host->req->error) {
		if (!(host->cmd_flags & CMD_READY))
			return 1;
		if (!(host->cmd_flags & FIFO_READY))
			return 1;
		if (host->req->need_card_int
		    && !(host->cmd_flags & CARD_INT))
			return 1;
	}
	return 0;
}

/* Called from interrupt handler */
static void tifm_ms_data_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int fifo_status = 0, host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev,
		"data event: fifo_status %x, host_status %x, flags %x\n",
		fifo_status, host_status, host->cmd_flags);

	if (host->req) {
		if (host->use_dma && (fifo_status & 1)) {
			host->cmd_flags |= FIFO_READY;
			rc = tifm_ms_check_status(host);
		}
		if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
			if (!tifm_ms_transfer_data(host)) {
				host->cmd_flags |= FIFO_READY;
				rc = tifm_ms_check_status(host);
			}
		}
	}

	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
}


/* Called from interrupt handler */
static void tifm_ms_card_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
		host_status, host->cmd_flags);

	if (host->req) {
		if (host_status & TIFM_MS_STAT_TOE)
			host->req->error = -ETIME;
		else if (host_status & TIFM_MS_STAT_CRC)
			host->req->error = -EILSEQ;

		if (host_status & TIFM_MS_STAT_RDY)
			host->cmd_flags |= CMD_READY;

		if (host_status & TIFM_MS_STAT_MSINT)
			host->cmd_flags |= CARD_INT;

		rc = tifm_ms_check_status(host);

	}

	writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
	       sock->addr + SOCK_MS_SYSTEM);

	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
	return;
}

static void tifm_ms_req_tasklet(unsigned long data)
{
	struct memstick_host *msh = (struct memstick_host *)data;
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&sock->lock, flags);
	if (!host->req) {
		if (host->eject) {
			do {
				rc = memstick_next_req(msh, &host->req);
				if (!rc)
					host->req->error = -ETIME;
			} while (!rc);
			spin_unlock_irqrestore(&sock->lock, flags);
			return;
		}

		do {
			rc = memstick_next_req(msh, &host->req);
		} while (!rc && tifm_ms_issue_cmd(host));
	}
	spin_unlock_irqrestore(&sock->lock, flags);
}

static void tifm_ms_dummy_submit(struct memstick_host *msh)
{
	return;
}

static void tifm_ms_submit_req(struct memstick_host *msh)
{
	struct tifm_ms *host = memstick_priv(msh);

	tasklet_schedule(&host->notify);
}

static int tifm_ms_set_param(struct memstick_host *msh,
			     enum memstick_param param,
			     int value)
{
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;

	switch (param) {
	case MEMSTICK_POWER:
		/* also affected by media detection mechanism */
		if (value == MEMSTICK_POWER_ON) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		} else if (value == MEMSTICK_POWER_OFF) {
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		} else
			return -EINVAL;
		break;
	case MEMSTICK_INTERFACE:
		if (value == MEMSTICK_SERIAL) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel((~TIFM_CTRL_FAST_CLK)
			       & readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		} else if (value == MEMSTICK_PAR4) {
			host->mode_mask = 0;
			writel(TIFM_CTRL_FAST_CLK
			       | readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		} else
			return -EINVAL;
		break;
	};

	return 0;
}

static void tifm_ms_abort(unsigned long data)
{
	struct tifm_ms *host = (struct tifm_ms *)data;

	dev_dbg(&host->dev->dev, "status %x\n",
		readl(host->dev->addr + SOCK_MS_STATUS));
	printk(KERN_ERR
	       "%s : card failed to respond for a long period of time "
	       "(%x, %x)\n",
	       dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
	       host->cmd_flags);

	tifm_eject(host->dev);
}

static int tifm_ms_probe(struct tifm_dev *sock)
{
	struct memstick_host *msh;
	struct tifm_ms *host;
	int rc = -EIO;

	if (!(TIFM_SOCK_STATE_OCCUPIED
	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
		       dev_name(&sock->dev));
		return rc;
	}

	msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
	if (!msh)
		return -ENOMEM;

	host = memstick_priv(msh);
	tifm_set_drvdata(sock, msh);
	host->dev = sock;
	host->timeout_jiffies = msecs_to_jiffies(1000);

	setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);
	tasklet_init(&host->notify, tifm_ms_req_tasklet, (unsigned long)msh);

	msh->request = tifm_ms_submit_req;
	msh->set_param = tifm_ms_set_param;
	sock->card_event = tifm_ms_card_event;
	sock->data_event = tifm_ms_data_event;
	if (tifm_has_ms_pif(sock))
		msh->caps |= MEMSTICK_CAP_PAR4;

	rc = memstick_add_host(msh);
	if (!rc)
		return 0;

	memstick_free_host(msh);
	return rc;
}

static void tifm_ms_remove(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);
	struct tifm_ms *host = memstick_priv(msh);
	int rc = 0;
	unsigned long flags;

	msh->request = tifm_ms_dummy_submit;
	tasklet_kill(&host->notify);
	spin_lock_irqsave(&sock->lock, flags);
	host->eject = 1;
	if (host->req) {
		del_timer(&host->timer);
		writel(TIFM_FIFO_INT_SETALL,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
		writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
		if (host->use_dma)
			tifm_unmap_sg(sock, &host->req->sg, 1,
				      host->req->data_dir == READ
				      ? PCI_DMA_TODEVICE
				      : PCI_DMA_FROMDEVICE);
		host->req->error = -ETIME;

		do {
			rc = memstick_next_req(msh, &host->req);
			if (!rc)
				host->req->error = -ETIME;
		} while (!rc);
	}
	spin_unlock_irqrestore(&sock->lock, flags);

	memstick_remove_host(msh);
	memstick_free_host(msh);
}

#ifdef CONFIG_PM

static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_suspend_host(msh);
	return 0;
}

static int tifm_ms_resume(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_resume_host(msh);
	return 0;
}

#else

#define tifm_ms_suspend NULL
#define tifm_ms_resume NULL

#endif /* CONFIG_PM */

static struct tifm_device_id tifm_ms_id_tbl[] = {
	{ TIFM_TYPE_MS }, { 0 }
};

static struct tifm_driver tifm_ms_driver = {
	.driver = {
		.name  = DRIVER_NAME,
		.owner = THIS_MODULE
	},
	.id_table = tifm_ms_id_tbl,
	.probe    = tifm_ms_probe,
	.remove   = tifm_ms_remove,
	.suspend  = tifm_ms_suspend,
	.resume   = tifm_ms_resume
};

static int __init tifm_ms_init(void)
{
	return tifm_register_driver(&tifm_ms_driver);
}

static void __exit tifm_ms_exit(void)
{
	tifm_unregister_driver(&tifm_ms_driver);
}

MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);

module_init(tifm_ms_init);
module_exit(tifm_ms_exit);
Commit	Line	Data
baf8532a AD	1	/*
	2	* TI FlashMedia driver
	3	*
	4	* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* Special thanks to Carlos Corbacho for providing various MemoryStick cards
	11	* that made this driver possible.
	12	*
	13	*/
	14
	15	#include <linux/tifm.h>
	16	#include <linux/memstick.h>
	17	#include <linux/highmem.h>
	18	#include <linux/scatterlist.h>
	19	#include <linux/log2.h>
c47e7893	20	#include <linux/module.h>
baf8532a AD	21	#include <asm/io.h>
	22
	23	#define DRIVER_NAME "tifm_ms"
baf8532a	24
90ab5ee9	25	static bool no_dma;
baf8532a AD	26	module_param(no_dma, bool, 0644);
baf8532a AD	27
92b22d93 AD	28	/*
	29	* Some control bits of TIFM appear to conform to Sony's reference design,
	30	* so I'm just assuming they all are.
	31	*/
baf8532a	32
92b22d93 AD	33	#define TIFM_MS_STAT_DRQ 0x04000
	34	#define TIFM_MS_STAT_MSINT 0x02000
	35	#define TIFM_MS_STAT_RDY 0x01000
	36	#define TIFM_MS_STAT_CRC 0x00200
	37	#define TIFM_MS_STAT_TOE 0x00100
	38	#define TIFM_MS_STAT_EMP 0x00020
	39	#define TIFM_MS_STAT_FUL 0x00010
	40	#define TIFM_MS_STAT_CED 0x00008
	41	#define TIFM_MS_STAT_ERR 0x00004
	42	#define TIFM_MS_STAT_BRQ 0x00002
	43	#define TIFM_MS_STAT_CNK 0x00001
	44
	45	#define TIFM_MS_SYS_DMA 0x10000
	46	#define TIFM_MS_SYS_RESET 0x08000
	47	#define TIFM_MS_SYS_SRAC 0x04000
	48	#define TIFM_MS_SYS_INTEN 0x02000
	49	#define TIFM_MS_SYS_NOCRC 0x01000
	50	#define TIFM_MS_SYS_INTCLR 0x00800
	51	#define TIFM_MS_SYS_MSIEN 0x00400
	52	#define TIFM_MS_SYS_FCLR 0x00200
	53	#define TIFM_MS_SYS_FDIR 0x00100
	54	#define TIFM_MS_SYS_DAM 0x00080
	55	#define TIFM_MS_SYS_DRM 0x00040
	56	#define TIFM_MS_SYS_DRQSL 0x00020
	57	#define TIFM_MS_SYS_REI 0x00010
	58	#define TIFM_MS_SYS_REO 0x00008
	59	#define TIFM_MS_SYS_BSY_MASK 0x00007
	60
	61	#define TIFM_MS_SYS_FIFO (TIFM_MS_SYS_INTEN \| TIFM_MS_SYS_MSIEN \
	62	\| TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_BSY_MASK)
baf8532a AD	63
	64	/* Hardware flags */
	65	enum {
92b22d93 AD	66	CMD_READY = 0x01,
	67	FIFO_READY = 0x02,
	68	CARD_INT = 0x04
baf8532a AD	69	};
	70
	71	struct tifm_ms {
	72	struct tifm_dev *dev;
92b22d93 AD	73	struct timer_list timer;
92b22d93 AD	74	struct memstick_request *req;
f1d82698	75	struct tasklet_struct notify;
baf8532a AD	76	unsigned int mode_mask;
	77	unsigned int block_pos;
	78	unsigned long timeout_jiffies;
92b22d93 AD	79	unsigned char eject:1,
	80	use_dma:1;
	81	unsigned char cmd_flags;
	82	unsigned char io_pos;
baf8532a AD	83	unsigned int io_word;
	84	};
	85
92b22d93 AD	86	static unsigned int tifm_ms_read_data(struct tifm_ms *host,
92b22d93 AD	87	unsigned char *buf, unsigned int length)
baf8532a AD	88	{
baf8532a AD	89	struct tifm_dev *sock = host->dev;
92b22d93 AD	90	unsigned int off = 0;
	91
	92	while (host->io_pos && length) {
	93	buf[off++] = host->io_word & 0xff;
	94	host->io_word >>= 8;
	95	length--;
	96	host->io_pos--;
	97	}
	98
	99	if (!length)
	100	return off;
	101
	102	while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
	103	if (length < 4)
	104	break;
	105	(unsigned int )(buf + off) = __raw_readl(sock->addr
	106	+ SOCK_MS_DATA);
	107	length -= 4;
	108	off += 4;
	109	}
baf8532a	110
92b22d93 AD	111	if (length
	112	&& !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
	113	host->io_word = readl(sock->addr + SOCK_MS_DATA);
	114	for (host->io_pos = 4; host->io_pos; --host->io_pos) {
baf8532a AD	115	buf[off++] = host->io_word & 0xff;
	116	host->io_word >>= 8;
	117	length--;
92b22d93 AD	118	if (!length)
92b22d93 AD	119	break;
baf8532a	120	}
baf8532a AD	121	}
baf8532a AD	122
92b22d93	123	return off;
baf8532a AD	124	}
baf8532a AD	125
92b22d93 AD	126	static unsigned int tifm_ms_write_data(struct tifm_ms *host,
92b22d93 AD	127	unsigned char *buf, unsigned int length)
baf8532a AD	128	{
baf8532a AD	129	struct tifm_dev *sock = host->dev;
92b22d93	130	unsigned int off = 0;
baf8532a	131
92b22d93 AD	132	if (host->io_pos) {
	133	while (host->io_pos < 4 && length) {
	134	host->io_word \|= buf[off++] << (host->io_pos * 8);
	135	host->io_pos++;
baf8532a	136	length--;
baf8532a	137	}
baf8532a AD	138	}
baf8532a AD	139
92b22d93 AD	140	if (host->io_pos == 4
	141	&& !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
	142	writel(TIFM_MS_SYS_FDIR \| readl(sock->addr + SOCK_MS_SYSTEM),
	143	sock->addr + SOCK_MS_SYSTEM);
	144	writel(host->io_word, sock->addr + SOCK_MS_DATA);
	145	host->io_pos = 0;
baf8532a	146	host->io_word = 0;
92b22d93 AD	147	} else if (host->io_pos) {
	148	return off;
	149	}
baf8532a	150
92b22d93 AD	151	if (!length)
92b22d93 AD	152	return off;
baf8532a	153
92b22d93 AD	154	while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
	155	if (length < 4)
	156	break;
	157	writel(TIFM_MS_SYS_FDIR \| readl(sock->addr + SOCK_MS_SYSTEM),
	158	sock->addr + SOCK_MS_SYSTEM);
	159	__raw_writel((unsigned int )(buf + off),
	160	sock->addr + SOCK_MS_DATA);
	161	length -= 4;
	162	off += 4;
	163	}
baf8532a	164
92b22d93 AD	165	switch (length) {
	166	case 3:
	167	host->io_word \|= buf[off + 2] << 16;
	168	host->io_pos++;
	169	case 2:
	170	host->io_word \|= buf[off + 1] << 8;
	171	host->io_pos++;
	172	case 1:
	173	host->io_word \|= buf[off];
	174	host->io_pos++;
	175	}
baf8532a	176
92b22d93	177	off += host->io_pos;
baf8532a	178
92b22d93	179	return off;
baf8532a AD	180	}
baf8532a AD	181
92b22d93	182	static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
baf8532a AD	183	{
baf8532a AD	184	struct tifm_dev *sock = host->dev;
92b22d93 AD	185	unsigned int length;
92b22d93 AD	186	unsigned int off;
d250dad6	187	unsigned int t_size, p_cnt;
92b22d93 AD	188	unsigned char *buf;
	189	struct page *pg;
	190	unsigned long flags = 0;
baf8532a	191
92b22d93 AD	192	if (host->req->long_data) {
	193	length = host->req->sg.length - host->block_pos;
	194	off = host->req->sg.offset + host->block_pos;
	195	} else {
	196	length = host->req->data_len - host->block_pos;
	197	off = 0;
	198	}
	199	dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
	200	host->block_pos);
	201
	202	while (length) {
d250dad6 AM	203	unsigned int uninitialized_var(p_off);
d250dad6 AM	204
92b22d93 AD	205	if (host->req->long_data) {
	206	pg = nth_page(sg_page(&host->req->sg),
	207	off >> PAGE_SHIFT);
	208	p_off = offset_in_page(off);
	209	p_cnt = PAGE_SIZE - p_off;
	210	p_cnt = min(p_cnt, length);
	211
	212	local_irq_save(flags);
eb3f0620	213	buf = kmap_atomic(pg) + p_off;
92b22d93 AD	214	} else {
	215	buf = host->req->data + host->block_pos;
	216	p_cnt = host->req->data_len - host->block_pos;
	217	}
baf8532a	218
92b22d93 AD	219	t_size = host->req->data_dir == WRITE
	220	? tifm_ms_write_data(host, buf, p_cnt)
	221	: tifm_ms_read_data(host, buf, p_cnt);
baf8532a	222
92b22d93	223	if (host->req->long_data) {
eb3f0620	224	kunmap_atomic(buf - p_off);
92b22d93 AD	225	local_irq_restore(flags);
92b22d93 AD	226	}
baf8532a	227
92b22d93 AD	228	if (!t_size)
	229	break;
	230	host->block_pos += t_size;
	231	length -= t_size;
	232	off += t_size;
	233	}
baf8532a	234
92b22d93 AD	235	dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
	236	if (!length && (host->req->data_dir == WRITE)) {
	237	if (host->io_pos) {
	238	writel(TIFM_MS_SYS_FDIR
	239	\| readl(sock->addr + SOCK_MS_SYSTEM),
	240	sock->addr + SOCK_MS_SYSTEM);
	241	writel(host->io_word, sock->addr + SOCK_MS_DATA);
	242	}
	243	writel(TIFM_MS_SYS_FDIR
	244	\| readl(sock->addr + SOCK_MS_SYSTEM),
	245	sock->addr + SOCK_MS_SYSTEM);
	246	writel(0, sock->addr + SOCK_MS_DATA);
	247	} else {
	248	readl(sock->addr + SOCK_MS_DATA);
	249	}
baf8532a	250
92b22d93	251	return length;
baf8532a AD	252	}
	253
	254	static int tifm_ms_issue_cmd(struct tifm_ms *host)
	255	{
	256	struct tifm_dev *sock = host->dev;
	257	unsigned char *data;
92b22d93	258	unsigned int data_len, cmd, sys_param;
baf8532a	259
92b22d93 AD	260	host->cmd_flags = 0;
	261	host->block_pos = 0;
	262	host->io_pos = 0;
	263	host->io_word = 0;
baf8532a AD	264	host->cmd_flags = 0;
baf8532a AD	265
92b22d93	266	data = host->req->data;
baf8532a	267
92b22d93	268	host->use_dma = !no_dma;
baf8532a	269
92b22d93 AD	270	if (host->req->long_data) {
	271	data_len = host->req->sg.length;
	272	if (!is_power_of_2(data_len))
	273	host->use_dma = 0;
e1f19995	274	} else {
baf8532a	275	data_len = host->req->data_len;
92b22d93 AD	276	host->use_dma = 0;
92b22d93 AD	277	}
baf8532a	278
92b22d93 AD	279	writel(TIFM_FIFO_INT_SETALL,
	280	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	281	writel(TIFM_FIFO_ENABLE,
	282	sock->addr + SOCK_FIFO_CONTROL);
	283
	284	if (host->use_dma) {
	285	if (1 != tifm_map_sg(sock, &host->req->sg, 1,
	286	host->req->data_dir == READ
	287	? PCI_DMA_FROMDEVICE
	288	: PCI_DMA_TODEVICE)) {
	289	host->req->error = -ENOMEM;
	290	return host->req->error;
	291	}
	292	data_len = sg_dma_len(&host->req->sg);
baf8532a	293
92b22d93 AD	294	writel(ilog2(data_len) - 2,
	295	sock->addr + SOCK_FIFO_PAGE_SIZE);
	296	writel(TIFM_FIFO_INTMASK,
	297	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
	298	sys_param = TIFM_DMA_EN \| (1 << 8);
	299	if (host->req->data_dir == WRITE)
	300	sys_param \|= TIFM_DMA_TX;
baf8532a	301
92b22d93 AD	302	writel(TIFM_FIFO_INTMASK,
92b22d93 AD	303	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
baf8532a	304
92b22d93 AD	305	writel(sg_dma_address(&host->req->sg),
	306	sock->addr + SOCK_DMA_ADDRESS);
	307	writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
	308	} else {
	309	writel(host->mode_mask \| TIFM_MS_SYS_FIFO,
	310	sock->addr + SOCK_MS_SYSTEM);
	311
	312	writel(TIFM_FIFO_MORE,
	313	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
e1f19995	314	}
baf8532a AD	315
	316	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
	317	writel(TIFM_CTRL_LED \| readl(sock->addr + SOCK_CONTROL),
	318	sock->addr + SOCK_CONTROL);
	319	host->req->error = 0;
	320
92b22d93 AD	321	sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
	322	sys_param \|= TIFM_MS_SYS_INTCLR;
	323
	324	if (host->use_dma)
	325	sys_param \|= TIFM_MS_SYS_DMA;
	326	else
	327	sys_param &= ~TIFM_MS_SYS_DMA;
	328
	329	writel(sys_param, sock->addr + SOCK_MS_SYSTEM);
	330
baf8532a AD	331	cmd = (host->req->tpc & 0xf) << 12;
	332	cmd \|= data_len;
	333	writel(cmd, sock->addr + SOCK_MS_COMMAND);
	334
92b22d93	335	dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
baf8532a AD	336	return 0;
	337	}
	338
	339	static void tifm_ms_complete_cmd(struct tifm_ms *host)
	340	{
	341	struct tifm_dev *sock = host->dev;
	342	struct memstick_host *msh = tifm_get_drvdata(sock);
baf8532a AD	343	int rc;
	344
	345	del_timer(&host->timer);
baf8532a	346
ead70773 AD	347	host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
	348	host->req->int_reg = (host->req->int_reg & 1)
	349	\| ((host->req->int_reg << 4) & 0xe0);
	350
	351	writel(TIFM_FIFO_INT_SETALL,
	352	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	353	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
	354
	355	if (host->use_dma) {
92b22d93 AD	356	tifm_unmap_sg(sock, &host->req->sg, 1,
	357	host->req->data_dir == READ
	358	? PCI_DMA_FROMDEVICE
	359	: PCI_DMA_TODEVICE);
ead70773	360	}
baf8532a AD	361
	362	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
	363	sock->addr + SOCK_CONTROL);
	364
92b22d93	365	dev_dbg(&sock->dev, "TPC complete\n");
baf8532a AD	366	do {
	367	rc = memstick_next_req(msh, &host->req);
	368	} while (!rc && tifm_ms_issue_cmd(host));
	369	}
	370
	371	static int tifm_ms_check_status(struct tifm_ms *host)
	372	{
	373	if (!host->req->error) {
	374	if (!(host->cmd_flags & CMD_READY))
	375	return 1;
92b22d93	376	if (!(host->cmd_flags & FIFO_READY))
baf8532a AD	377	return 1;
baf8532a AD	378	if (host->req->need_card_int
92b22d93	379	&& !(host->cmd_flags & CARD_INT))
baf8532a AD	380	return 1;
	381	}
	382	return 0;
	383	}
	384
	385	/* Called from interrupt handler */
	386	static void tifm_ms_data_event(struct tifm_dev *sock)
	387	{
	388	struct tifm_ms *host;
92b22d93	389	unsigned int fifo_status = 0, host_status = 0;
baf8532a AD	390	int rc = 1;
	391
	392	spin_lock(&sock->lock);
	393	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	394	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
92b22d93 AD	395	host_status = readl(sock->addr + SOCK_MS_STATUS);
	396	dev_dbg(&sock->dev,
	397	"data event: fifo_status %x, host_status %x, flags %x\n",
	398	fifo_status, host_status, host->cmd_flags);
baf8532a AD	399
baf8532a AD	400	if (host->req) {
92b22d93 AD	401	if (host->use_dma && (fifo_status & 1)) {
	402	host->cmd_flags \|= FIFO_READY;
	403	rc = tifm_ms_check_status(host);
	404	}
	405	if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
	406	if (!tifm_ms_transfer_data(host)) {
baf8532a AD	407	host->cmd_flags \|= FIFO_READY;
	408	rc = tifm_ms_check_status(host);
	409	}
	410	}
	411	}
	412
	413	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
	414	if (!rc)
	415	tifm_ms_complete_cmd(host);
	416
	417	spin_unlock(&sock->lock);
	418	}
	419
	420
	421	/* Called from interrupt handler */
	422	static void tifm_ms_card_event(struct tifm_dev *sock)
	423	{
	424	struct tifm_ms *host;
	425	unsigned int host_status = 0;
	426	int rc = 1;
	427
	428	spin_lock(&sock->lock);
	429	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	430	host_status = readl(sock->addr + SOCK_MS_STATUS);
	431	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
	432	host_status, host->cmd_flags);
	433
	434	if (host->req) {
92b22d93	435	if (host_status & TIFM_MS_STAT_TOE)
baf8532a	436	host->req->error = -ETIME;
92b22d93	437	else if (host_status & TIFM_MS_STAT_CRC)
baf8532a AD	438	host->req->error = -EILSEQ;
baf8532a AD	439
92b22d93	440	if (host_status & TIFM_MS_STAT_RDY)
baf8532a	441	host->cmd_flags \|= CMD_READY;
92b22d93 AD	442
	443	if (host_status & TIFM_MS_STAT_MSINT)
	444	host->cmd_flags \|= CARD_INT;
baf8532a AD	445
	446	rc = tifm_ms_check_status(host);
	447
	448	}
	449
92b22d93	450	writel(TIFM_MS_SYS_INTCLR \| readl(sock->addr + SOCK_MS_SYSTEM),
baf8532a AD	451	sock->addr + SOCK_MS_SYSTEM);
	452
	453	if (!rc)
	454	tifm_ms_complete_cmd(host);
	455
	456	spin_unlock(&sock->lock);
	457	return;
	458	}
	459
f1d82698	460	static void tifm_ms_req_tasklet(unsigned long data)
baf8532a	461	{
f1d82698	462	struct memstick_host msh = (struct memstick_host )data;
baf8532a AD	463	struct tifm_ms *host = memstick_priv(msh);
	464	struct tifm_dev *sock = host->dev;
	465	unsigned long flags;
	466	int rc;
	467
	468	spin_lock_irqsave(&sock->lock, flags);
f1d82698 AD	469	if (!host->req) {
	470	if (host->eject) {
	471	do {
	472	rc = memstick_next_req(msh, &host->req);
	473	if (!rc)
	474	host->req->error = -ETIME;
	475	} while (!rc);
	476	spin_unlock_irqrestore(&sock->lock, flags);
	477	return;
	478	}
baf8532a	479
baf8532a AD	480	do {
baf8532a AD	481	rc = memstick_next_req(msh, &host->req);
f1d82698	482	} while (!rc && tifm_ms_issue_cmd(host));
baf8532a	483	}
baf8532a	484	spin_unlock_irqrestore(&sock->lock, flags);
f1d82698 AD	485	}
	486
	487	static void tifm_ms_dummy_submit(struct memstick_host *msh)
	488	{
baf8532a AD	489	return;
	490	}
	491
f1d82698 AD	492	static void tifm_ms_submit_req(struct memstick_host *msh)
	493	{
	494	struct tifm_ms *host = memstick_priv(msh);
	495
	496	tasklet_schedule(&host->notify);
	497	}
	498
b7789998 AD	499	static int tifm_ms_set_param(struct memstick_host *msh,
	500	enum memstick_param param,
	501	int value)
baf8532a AD	502	{
	503	struct tifm_ms *host = memstick_priv(msh);
	504	struct tifm_dev *sock = host->dev;
baf8532a AD	505
	506	switch (param) {
	507	case MEMSTICK_POWER:
eebbe9ca AD	508	/* also affected by media detection mechanism */
	509	if (value == MEMSTICK_POWER_ON) {
	510	host->mode_mask = TIFM_MS_SYS_SRAC \| TIFM_MS_SYS_REI;
	511	writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
	512	writel(TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_INTCLR,
	513	sock->addr + SOCK_MS_SYSTEM);
	514	writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
	515	} else if (value == MEMSTICK_POWER_OFF) {
	516	writel(TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_INTCLR,
	517	sock->addr + SOCK_MS_SYSTEM);
	518	writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
b7789998 AD	519	} else
b7789998 AD	520	return -EINVAL;
baf8532a AD	521	break;
	522	case MEMSTICK_INTERFACE:
	523	if (value == MEMSTICK_SERIAL) {
92b22d93	524	host->mode_mask = TIFM_MS_SYS_SRAC \| TIFM_MS_SYS_REI;
baf8532a AD	525	writel((~TIFM_CTRL_FAST_CLK)
	526	& readl(sock->addr + SOCK_CONTROL),
	527	sock->addr + SOCK_CONTROL);
e1f19995	528	} else if (value == MEMSTICK_PAR4) {
baf8532a AD	529	host->mode_mask = 0;
	530	writel(TIFM_CTRL_FAST_CLK
	531	\| readl(sock->addr + SOCK_CONTROL),
	532	sock->addr + SOCK_CONTROL);
b7789998 AD	533	} else
b7789998 AD	534	return -EINVAL;
baf8532a AD	535	break;
	536	};
	537
b7789998	538	return 0;
baf8532a AD	539	}
	540
	541	static void tifm_ms_abort(unsigned long data)
	542	{
	543	struct tifm_ms host = (struct tifm_ms )data;
	544
	545	dev_dbg(&host->dev->dev, "status %x\n",
	546	readl(host->dev->addr + SOCK_MS_STATUS));
	547	printk(KERN_ERR
	548	"%s : card failed to respond for a long period of time "
	549	"(%x, %x)\n",
0252c3b4	550	dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
baf8532a AD	551	host->cmd_flags);
	552
	553	tifm_eject(host->dev);
	554	}
	555
baf8532a AD	556	static int tifm_ms_probe(struct tifm_dev *sock)
	557	{
	558	struct memstick_host *msh;
	559	struct tifm_ms *host;
	560	int rc = -EIO;
	561
	562	if (!(TIFM_SOCK_STATE_OCCUPIED
	563	& readl(sock->addr + SOCK_PRESENT_STATE))) {
	564	printk(KERN_WARNING "%s : card gone, unexpectedly\n",
0252c3b4	565	dev_name(&sock->dev));
baf8532a AD	566	return rc;
	567	}
	568
	569	msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
	570	if (!msh)
	571	return -ENOMEM;
	572
	573	host = memstick_priv(msh);
	574	tifm_set_drvdata(sock, msh);
	575	host->dev = sock;
	576	host->timeout_jiffies = msecs_to_jiffies(1000);
baf8532a AD	577
baf8532a AD	578	setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);
f1d82698	579	tasklet_init(&host->notify, tifm_ms_req_tasklet, (unsigned long)msh);
baf8532a	580
f1d82698	581	msh->request = tifm_ms_submit_req;
baf8532a AD	582	msh->set_param = tifm_ms_set_param;
	583	sock->card_event = tifm_ms_card_event;
	584	sock->data_event = tifm_ms_data_event;
eebbe9ca AD	585	if (tifm_has_ms_pif(sock))
eebbe9ca AD	586	msh->caps \|= MEMSTICK_CAP_PAR4;
baf8532a	587
eebbe9ca	588	rc = memstick_add_host(msh);
baf8532a AD	589	if (!rc)
	590	return 0;
	591
	592	memstick_free_host(msh);
	593	return rc;
	594	}
	595
	596	static void tifm_ms_remove(struct tifm_dev *sock)
	597	{
	598	struct memstick_host *msh = tifm_get_drvdata(sock);
	599	struct tifm_ms *host = memstick_priv(msh);
	600	int rc = 0;
	601	unsigned long flags;
	602
f1d82698 AD	603	msh->request = tifm_ms_dummy_submit;
f1d82698 AD	604	tasklet_kill(&host->notify);
baf8532a AD	605	spin_lock_irqsave(&sock->lock, flags);
	606	host->eject = 1;
	607	if (host->req) {
	608	del_timer(&host->timer);
	609	writel(TIFM_FIFO_INT_SETALL,
	610	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	611	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
92b22d93	612	if (host->use_dma)
baf8532a AD	613	tifm_unmap_sg(sock, &host->req->sg, 1,
	614	host->req->data_dir == READ
	615	? PCI_DMA_TODEVICE
	616	: PCI_DMA_FROMDEVICE);
	617	host->req->error = -ETIME;
	618
	619	do {
	620	rc = memstick_next_req(msh, &host->req);
	621	if (!rc)
	622	host->req->error = -ETIME;
	623	} while (!rc);
	624	}
	625	spin_unlock_irqrestore(&sock->lock, flags);
	626
	627	memstick_remove_host(msh);
baf8532a AD	628	memstick_free_host(msh);
	629	}
	630
	631	#ifdef CONFIG_PM
	632
	633	static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
	634	{
d114ad54 AD	635	struct memstick_host *msh = tifm_get_drvdata(sock);
	636
	637	memstick_suspend_host(msh);
baf8532a AD	638	return 0;
	639	}
	640
	641	static int tifm_ms_resume(struct tifm_dev *sock)
	642	{
	643	struct memstick_host *msh = tifm_get_drvdata(sock);
baf8532a	644
d114ad54	645	memstick_resume_host(msh);
baf8532a AD	646	return 0;
	647	}
	648
	649	#else
	650
	651	#define tifm_ms_suspend NULL
	652	#define tifm_ms_resume NULL
	653
	654	#endif /* CONFIG_PM */
	655
	656	static struct tifm_device_id tifm_ms_id_tbl[] = {
	657	{ TIFM_TYPE_MS }, { 0 }
	658	};
	659
	660	static struct tifm_driver tifm_ms_driver = {
	661	.driver = {
	662	.name = DRIVER_NAME,
	663	.owner = THIS_MODULE
	664	},
	665	.id_table = tifm_ms_id_tbl,
	666	.probe = tifm_ms_probe,
	667	.remove = tifm_ms_remove,
	668	.suspend = tifm_ms_suspend,
	669	.resume = tifm_ms_resume
	670	};
	671
	672	static int __init tifm_ms_init(void)
	673	{
	674	return tifm_register_driver(&tifm_ms_driver);
	675	}
	676
	677	static void __exit tifm_ms_exit(void)
	678	{
	679	tifm_unregister_driver(&tifm_ms_driver);
	680	}
	681
	682	MODULE_AUTHOR("Alex Dubov");
	683	MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
	684	MODULE_LICENSE("GPL");
	685	MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);
baf8532a AD	686
	687	module_init(tifm_ms_init);
	688	module_exit(tifm_ms_exit);